Cementing machine



0d. 3, 1933. A, JOHNSON 1,928,694

CEMENTING MACHINE Filed Jan. 27, 1931 3 Sheets-Sheet 1 8 m mam mmm Oct.3, 1933. s, JQHNSQN 1,928,694

CEMENTING MACHINE Filed Jan. 27, 1931 3 Sheets-Sheet 2 5 KM a mmm Oct.3, 1933- A. s. JOHNSON CEMENTING MACHINE Filed Jan. 27, 1951 3Sheets-Sheet 3 w 7.1M I 1 A 1 a? an WW 3 4. l- J 7 6 Q i 07 n 7 W f0Patented Oct. 3, 1933 UNITED STATES CEMENTING MACHINE Arthur S. Johnson,Beverly, Mass., assignor to United Shoe Machinery Corporation, Paterson,N. J., a corporation of New Jersey;

Application January '27,

9 Claims.

This invention, relates to cementing machines and is herein illustratedas embodied in a machine for the application of cement to the marginalportions of shoe soles.

In the manufacture of shoes in which the soles are secured to the upperssolely or primarily by means of cement, it is customaryto apply 2.marginal stripe of cement to the flesh surface of the soles prior tobringing together the soles and the uppers. The cement, which usually isof the pyroxylin type, must be applied in liberal quantities, but, inview of the difficulty of removing drippings of cement accidentallyapplied to exposed portions of the soles, it is essential that the flowof cement shall be adequately controlled. It is also very'desirable thatthe cement shall be applied in a stripe of uniform thickness. ,Furthermore, it is preferable to apply the cement by means of an applyingmember positioned above the work so that the operator can see what isgoing on and make sure of the proper operation of the machine withoutinverting the Work. With this type of machine it is all the moredifficult to control the cement and to avoid dripping on the work.

Accordingly, a primary object of the invention is to provide an improvedcement applying machine in which the flow of cement can be adequatelycontrolled and in which soiling of the work will be avoided.

With this in view, the illustrated machine, in accordance with animportant feature of the invention, provides in a casing which surroundsa rotary applying member, cooperating control members associated withthe same side of the periphery of the applying member within the casingand located one adjacent to the inlet of the casing and the otheradjacent to the outlet thereof. The first of these controlling members,

regulates to a large extent the quantity of cement which is delivered tothe applying member from an overhead cement pot from which cement flowsby gravity into the casing. The second control memberserves both as aspreader to even up the cement on the periphery of the'applying memberand as a control member to hold back within the casing such cement as isnot removed from the applying member as, for example, during theintervals between the presentation of pieces of work. This second memberis also provided with a portion coacting with a lateral face of theapplying brush to prevent the formation of a bead at the edge thereof.

In the use of pyroxylin cement it is customary to provide the operatorwith a small receptacle 1931. Serial No. 511,563 f containing solvent'ofany known kind in which spare applying members may be kept clean and anyunremoved portions of cement prevented from hardening. Accordingly,another feature of the invention resides in the provision of a.receptacle positioned o'n-the machine beneath the applying member andprovided with a cover which can be supported on this receptacle in aninclined position and arranged to catch drippings from the applyingmember and conduct them to the receptacle.

These and other features of the invention will bemcre fully described inthe following specification taken in connection with the accompanyingdrawings, in which Fig. l is a front elevation of the machine;

Fig. 2 is a side elevation thereof;

, Fig. 3 is a detail in vertical section of a rotatable edge gage; I

Fig. l is an enlarged view of the front of the applying member with thecasing surrounding that member broken out to show the cement controllingmembers contained therein;

Fig. 5 is a side elevation on a still larger scale of the applying brushwith the casing in section and showing a shoe sole presented thereto;

Fig. 6 is a detail plan view of a latch controlling a valve forregulating the flow of cementfrom the cement pot, and v Fig. 7 is aperspective view of the applying brush, removed from its casing, withone of the cement controlling members.

The illustrated machine is of the type shown in Letters Patent of theUnited States No. 1,778,- 184, granted October 14, 1930, on theapplication of J. W. Cosgrove, and, like that machine, has as itsapplying member a driven} brush 10 mounted upon a shaft 12 which issupported in the upper half of a two-part frame 14, 15 and is arrangedto be driven by an electric motor 16 in the direction indicated by anarrow in Fig; 4. The frame 14, 15 iscarried at the upper end of acolumn18 and at the top 'of the machine there is provided an overheadremovable cement pct 20 which delivers cement through a delivery passage22 in a casting 23 constituting partof the pct 20 to a casing 24surrounding the brush 10. A slide valve 26 operated by a hand lever 28opens or closes this' passage 22. As in the patented machine, theframeis provided with an extension 30 having an overhanging hook 32 whichcooperates with the lever 28 to prevent removal of the cement pct 20unless the valve isclosed, The illustrated machine has,'in addition, .astop plate 34..co'operating with a flattened extension 36 of the valve26 to determine the maximum open position of the valve. The position ofthe stop plate 34 may be regulated by means of a hand screw 38. A springlatch 40 screwed to the under side of the stop plate 34 cooperates witha notch in the under side of the extension 36 to retain the valvein openposition unaffected by any vibration of the machine.

If it is desired to hold the valve in closed position, a screw 42threaded through the rear end of the lever 28 may be adjusted to the.position shown in Fig. 6 to hold the valve closed.

The illustrated brush it) differs from that shown in the patentedconstruction in that it provided not only with the usual bristles 44 butalso has wire bristles 46 passed through suitable openings in the hub 48and designed to have an abrasive action upon the margin of the shoe sole50 to rough up the sole and bring the cement into more intimate contactwith the fibers of the leather and to allow the escape of air bubblestrapped in said fibers. It is rotated counterclockwise, as viewed inFig. 4, so that it brushes against the surface of the sole 50 as thelatter is moved from right to left.

The casing 24 resembles that of the patented construction in that it "isprovided with an un-' dercut tongue 52 (Fig. 5) which is received in adovetailed slot 54 in the frame of 'the'machine but differs therefrom insubstantial particulars. In the illustrated arrangement the casing isheld detachably upon the frame by means of an end plate 56 secured tothe tongue 52 and to the frame of the machine by suitable machinescrews. The casing 24 is in the form 'of a hollow casting closed by aremovable end plate 58 and provided with an internal recessor passageway60 (Fig. 4) in which the applying brush 10 is positioned; The casing hasan inlet opening 62 communicating directly with the passage 22 and alsohas an outlet opening 64 through which the brush 10 projects and isexposed for the application of pieces of work to its under surface (Fig.5). The hub '48 of the brush 10 fits closely within the casing 24,compressing a felt washer 65, so as to prevent cement from. flowingpastsaid hub. The casing is provided with a'cement controlling scraper66 slidably mounted in the casing adjacent to the down-going side of thebrush and adjustable toward and away from the brush by.

means of a screw 68. This scraper 66 is in the form'of a blade having a'tapered outer end positioned close to the periphery of the brush at apoint on the down-going side thereof just below the inlet opening 62.Another cement controlling blade or spreader 70 has a beveled edge 71which cooperates with the periphery of the brush on the down-going sidethereof at a point closely adjacent to the outer opening 64. This bladeis notched to provide a central portion which cooperates with theperiphery of the brush and side arms 73 (Figs. 4 and 5) which cooperatewith the lateral faces of the brush to prevent the formation of beads ofcement at the edges of the-brush. The blade is positioned at aninclination to a radius of the brush at the point of intersectionbetween the blade andthe periphery of the brush, so'that the ends of the.bristles pass the central portion of the blade without radicaldeflection thereof, and so that thecooperation of the arms '73 with thelateral faces of the'brush is gradual and not abrupt as would be thecase if these arms coincided with a radius of the brush. The position ofthis spreader '70 may be controlled by means of a screw 72 and inpractice the spreader is brought close to the brush bristles so that thecement carried by the brush is spread out into a uniform mass equal inthickness across the width of the brush. As long as the machine is inoperation there is no tendency for cement to flow down past the up-goingside of the brush because of the drag by the bristles of the brush andwhen the machine isstopped the valve 26 is closed, thereby shutting offthe fiow of cement.

When the machine is in operation, the upper scraper 66 holds back mostof the cement which is descending from the cement pot and, owing to thefriction of the revolving brush 10, the cement is caused to roll overand over just above the end of this scraper, as illustrated in Fig. 4.The action of the spreader '70 in spreading out the film of cement andin preventing the formation of beads at the edges of the brush hasalready been set forth. It can be seen, if a piece of glass issubstituted for the end cover 58, that in intervals between thepresentation of peces' of work there is stored up between the lowerspreader 70 and the upper scraper 66 a small quantity of cement, asindicated in Fig. 4. When work is presented to the brush, this cement isused up rapidly and as soon as the presentation of work ceases then itbegins again to accumulate in this space. There is always a thin film ofcement upon the periphery of the brush from the point at which it leavesthe spreader 70 around to the point at which it aga n meets the inletopenings 62 of the casing.

Partly because of the quick drying qualites of the pyroxylin cementusually employed and partly because of the desire to apply a liberalquantity of cement, it has been found particularly difiicult to keep anordinary fixed edge gage clean and in serviceable condition.Accordingly, the mach'ne is provided with a rotatable edge gage 74 whichconstantly presents a new surface to the advancing piece of work andwhich is kept clean by means of a cooperating scraper blade '76 whichcontacts with the side of the gage whch is leaving the work. Preferablythe gage is in the form of a cylinder having a depending flange '78 anda.

hub (Fig. 3), the flange '78 extending below the hub so'as to protect abearing 82 in which is' carried a shaft 84 for supporting the gage andto keep th s bearing free from cement. This cylindrical gage is securedto the shaft 84 for rotation in" the direction indicated by an arrow inFigs..

2, 4 and 5, and about an upright axis substantially at right angles tothe shaft 12 on which the applying member 10 is carried. The bearing 82forth-e upright shaft 84 is part of a hollow casing 86 adjustablysupported on the frame by means of a clamp nut 88. This permits the gageto be moved toward and away from the applying member to bring the stripeof cement in exactly the desired relation to the margin of a sole 50(Fig. 5). Within the hollow casing 86 are mitre gears 90 connecting theupright shaft 84 to a horizontal shaft 92 which is joined by a screwand-slot connection 94' (Fig. 3) to a stub shaft 96 having a tongue 98arranged to enter a corresponding slot in the end of a shaft 100,provided in the patented machne as a jack shaft carrying 1,028,694" thusfacllitating 'a'ssembly of-the: device andithe.

exclusion of cement. This gage and its mounting arenot claimed hereinsince they are claimed-in a copending' application Serial .No. 511,808,filed cover 110 which may, if desiredgcontairiasmall amountof solventfor the particularcement and ,which at any rate'will exclude air from'the brush and keep the same soft and in' a workable condition. Tofacilitate the applicationof this. cover after the gage nut 88 has beenloosened and the gage moved back out .of the way, the casing .24 isprovided with undercut grooves 1l2 .and 114 (Fig. 5) and the upper edgesofxthe sides of; the cover 110 are inturned (Fig. 2) and arranged-tosnap into said grooves for frictional engagement with the casing whenthe cover is; applied to the casing.

Although the arrangement for controlling the cement on theapplying'member ishighly efficient, it nevertheless is found practicallyimpossible wholly to eliminate dripping, and I' have therefore-providedan arrangement for catching such slight dripping as may occur, therebytoavoid soiling: the floor of the room in which themachine is used. Forthis purpose, as wellas for others to be explained, there isprovided areceptacle 120 detachably mounted on a U-shaped A of the thicker part ofthe liquid such as may result from the drippings conducted to thereceptawith similar lugs upon a bracket 150 in the other 70.13 brackets140 and 150 may be brou t i level ceptacle is provided witha lug 128arrangedto support the cover 124 in inclined position, as shown in Fig.2, with-the cover directly beneath the applying brush 10 so as to catchdrippings therefrom and constructed and arranged. to conduct thesedrippngs into the receptacle 120., This receptacle may be partially.filled with solvent, if desired, and utilized as a storage place for thecover 110 or for spare brushes (not shown) which may be substituted forthe brush 10 on the machine. To make it more satisfactory for thispurpose, there has been provided a removable rack 130 which will holdthe immersed parts out cle by the cover 124. This rack is provided withan upstanding handle 132 by means of which the immersed parts may belifted out of the liquid for use by the operator or when it is necessaryto clean out the receptacle;

For the convenience of the operator, the machine preferably is alsoprovided with a work table 134 clamped to a horizontal bar 136 which,

' in turn, is clamped to an upright bar 138 adjust ably held in abracket 140 by means of a collar 142 and a set-screw 144. This bracket140 reaches half way around the supporting column 18 and is providedwith lateral lugs 146 which cooperate side of the column to receiveclamp screws 148. The brackets 140 and 150 have dependingfeet 152 whichbear against the sides of thercolumn and byproper adjustment of thescrews'148 the position regardless of the exact dimensions of the columnor the position of the brackets thereon. On the other side of themachine there is a similar arrangement of bars 154 and 156, this latterbar 156 being received within a clamp 158 on-the under side '01. a rackholder frame160. This. frame may beused to support .a wire rack 162 ofthe type illustrated and designed toreceive cemented soles 50 or toreceive wooden racks or pipe racks of-the types found in shoe factoriesand used for a similar purpose. To this end, the

rack frame .160 has adjustable lugs 166 which cooperate with pivotedjaws 168 inclamping one side of the rack 162. r The jaws 168, pivoted onfulcrum pins .169, are. spring-pressed towardthe rack-:bycoil-.springs'170 the tension of which 1 may be adjusted'by screws 1'72.

In the-use of the machine, supposing that th pct. 20 is full of cementand that the operator has provided himself with .a stack of work (notshown) on the table 134, he will remove the cover 110 to expose thebrush anddeposit it in the receptacle 120, and then will adjust the edgegage 74 into the desired relation to the brush by loosening andtightening the wing nut 88. He

; then will open the valve 26 by movement of the lever 28 and, ifnecessary, will adjust the cement controller '66' and the spreader 70 toprovide just the desired amount of cement 'on the brush'for applicationto the work. Soles 50 may then be passed beneath the brush from right toleft, as viewed inFig. 4, their'progress being helped by the rotary gage74 until the margins have been coated, whereupon each sole will bedeposited in the rack 162to 'dry. The cement coatings are later revivedas the solesare'em bodied in shoes. 1 V 1 i Havingdescribedmyinventionjwhat I claim as new and desire to secure by Letters Patentof the United States is:-

1.In a cementing machine, a casing having openings at the and bottom,anapplying member rotatably mounted within said casing and projectingthrough the bottom opening for contact with pieces of work presentedthereto, means forsu'pplying cement to the upper opening of said casing,a cement controllingmemb'er in said casing cooperating withthe peripheryof the applying member on one side and adjacent to the upper opening ofthe casing, and another cement controlling member coacting with theperiphery of the applying member on the same side of the casing andadjacent to the lower opening of the casing. V

2. In a cementing machine, a casing open at the top and bottom, a drivenrotatable applying member substantially filling said casing andprojecting through the bottom opening for contact with pieces of workpresented thereto, means for supplying cement to the upper opening ofthe casing, a cement controlling scraper adjustably mounted in saidcasing with its edge adjacent to the downgoing side of the periphery ofthe applying member as said periphery passes the upper opening of thecasing, and a cement controlling spreader contacting with the downgoingside of the periphery of the applying member as the lel to the axisthereof, a cement controlling scraper adjustably mounted in said casingand cooperating with the downgoing side of the brush at a point justbelow the upper opening in the casing, and a cement controlling spreadercontacting with the downgoing periphery of the brush adjacent totheoutlet opening of the easing, said adjustable members and the casingportion, means for supplying cement to the upper posed for thepresentation-of work, and a cement controlling member associated with.-the down-v going side of the brush having one-portion coopcratingwiththe periphery of the brush and another portion cooperating with alateral face of the flexible portion of the brush, said latter portionserving to prevent the formation of a bead of cement at the edge of thebrush. a

5. In a cementing machine, a driven rotatably mounted applying brushhaving a hub and bristles extending therefrom, means for supplyingcement to an upper portion of said-brush, and means for controlling thecement applied by the lower face of the brush to a piece of workcomprising a blade disposed at an inclination to a radius of the brushat the point of intersection between the edge of the blade and theperiphery of the brush, said blade being notched and pro-' vided withoutwardly extending arms coacting with the lateral faces of the bristleportion of the brush to prevent the formation of beads-of cement'at theedges of the brush.

6; In a cementing'machine, a casing open at the top and bottom, a drivenbrush'having "an applying portion and rotatably mounted within saidcasing and projecting through the bottom opening for contact with piecesof work presented thereto, means for supplying cement to the upperopening of said casing, a cement controlling memberin said casingcooperating with the periphery of the applying member on the downgoingside thereof adjacent to the upper opening of the casing, and anothercement controlling member coacting with the applying member on thedowngoing side thereof at alower point in the casing having. vaportiomassociated with the periphery of the brush andanother portionassociated with thelateral taceof the applying portion of the brush toprefient the'formation of a bead at the edge of the brush.

7 a cementing machine, a cement applying member exposed at its lowerside for the presentation of work thereto, an overhead receptaclesupplying cement to. the upper side of said member, another receptaclemounted on said machine at a substantial distance'below said applyingmember, a cover for said latter receptacle, and means for supportingsaid cover in inclined open position directly beneath said applyingmember, said cover being constructed and arranged when the cover is ininclined open position to drain into the latter receptacle the drippingsfromthe applying member.

8.In a cementing machine, a rotary cementapplying member, means forsupplying cement to the upper side of said member, the lower side ofsaid member being exposed for the presentation of the work thereto, areceptacle mounted on said machine and positioned to the rear of saidapplying member, said receptacle having a hinged cover positioned, whenopen, directly beneath said applying member, and means for supportingsaid cover in inclined open position to catch the drippings :from theapplying member and lead them into the receptacle.

9. In a cementing machine of a type liable to dripping from an applyingmember to the under side of which work may be presented, a receptaclefor the reception of disconnected machine parts and adapted to containcement solvent, said receptacle being positioned below said applyingmember and provided with means to catch drippings from the applyingmember and conduct them to the receptacle, and a screen in saidreceptacle spaced-from the bottomthereof to support the machine partsout of contact with accumulated drippings of cement.

ARTHUR S. JOHNSON.

